The evolution of the planetary nebula NGC 6826

Details The evolution of the planetary nebula NGC 6826 The evolution of the planetary nebula NGC 6826

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99.1883p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, June 1990, p. 1883-1890, 2169.

Astronomy and Astrophysics

Astronomy

41

Binary Stars, Evolution (Development), Planetary Nebulae, Charge Coupled Devices, Density Distribution, Emission Spectra, H Alpha Line, Hot Stars, Mass Distribution, Stellar Winds

Scientific paper

The density and mass profiles of the planetary nebula NGC 6826 are studied. New CCD images are used to deconvolve the density from the emission measure in H-alpha, assuming that the planetary nebula is spherically symmetric. For an assumed distance of 1.54 kpc the mass of the inner region r less than 13 arcsec is about 0.15 solar mass and that the entire visible planetary nebula is 0.54 solar mass. The possible formation of the dense shell at the edge of the nebula as a result of interaction with the ISM is discussed. The formation of the spherical outer halo together with an elliptical inner region can be explained by a low mass companion to the progenitor of NGC 6826 that was evaporated or collided with the central star.

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